Two-tier storage shelf



FIG. 1 is a perspective view of a two-tier storage shelf showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a perspective view thereof in a lowered configuration; and,

FIG. 8 is a perspective view thereof in an uplifted configuration.

A rear view is omitted since the rear view is a mirror image of the front view. 

CLAIM The ornamental design for a two-tier storage shelf, as shown and described. 